Vsauce 3 DONGs: ButtonBeats DubStep Cube

Vsauce 3 has created a list of DONGs that will keep you awake all night. My favorite one is ButtonBeats DubStep Cube, a website where a 3D cube can be used to create dubstep music. It is awesome, fun to play with and easy to understand. I nneeded just this right now, while I am a bit upset. It relaxes me!